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Today, 02:42

X²+3x-70=0

(x-10) = 0 (x+7) = 0

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Answers (2)
  1. Today, 02:55
    0
    X-10=0 x+7=0

    +10 + 10 - 7 - 7

    x=10 x=-7
  2. Today, 03:28
    0
    The first term is, x2 its coefficient is 1.

    The middle term is, - 3x its coefficient is - 3.

    The last term, "the constant", is - 70

    Step-1 : Multiply the coefficient of the first term by the constant 1 • - 70 = - 70

    Step-2 : Find two factors of - 70 whose sum equals the coefficient of the middle term, which is - 3.

    -70 + 1 = - 69 - 35 + 2 = - 33 - 14 + 5 = - 9 - 10 + 7 = - 3 That's it

    Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, - 10 and 7

    x2 - 10x + 7x - 70

    Step-4 : Add up the first 2 terms, pulling out like factors:

    x • (x-10)

    Add up the last 2 terms, pulling out common factors:

    7 • (x-10)

    Step-5 : Add up the four terms of step 4:

    (x+7) • (x-10)
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